Cover indicates that Dover and Clover are in this issue. They are not, and they weren't in the original More Fun Comics 101 either.
Credits per the GCD credits for the original cover; miscredited to Cliff Young in this reprint.
An overview of the context of this issue, the history of the title, and Superboy's first appearance, and credits for this issue. Appears on inside of front and back covers.
Writer ID by Bob Hughes; in this issue it says "Unknown".
Writer id by Martin O'Hearn. Origin of Superboy. No Siegel and Shuster by-line. This reprint credits "Unknown" for both writer and artist.
Originally two pages in length; second page is not included in this reprint.
Last Golden Age appearance of the Spectre.